Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J1/00—Photometry, e.g. photographic exposure meter
  • G01J1/02—Details
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J1/00—Photometry, e.g. photographic exposure meter
  • G01J1/02—Details
  • G01J1/04—Optical or mechanical part supplementary adjustable parts
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J1/00—Photometry, e.g. photographic exposure meter
  • G01J1/02—Details
  • G01J1/04—Optical or mechanical part supplementary adjustable parts
  • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
  • G01J1/0474—Diffusers
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J1/00—Photometry, e.g. photographic exposure meter
  • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
  • G01J2001/4266—Photometry, e.g. photographic exposure meter using electric radiation detectors for measuring solar light

Definitions

• the invention relates to a solar sensor with a transducer and a radiation-permeable area located above it, for example in a cap or in a housing.
• a sun sensor is known from EP 0 492 352 B1 which, as an electro-optical converter, has a light-sensitive surface.
• the lens of the sensor located above the transducer is part of the housing, which like the lens consists of a translucent material, for example plastic or glass.
• the lens material is self-scattering.
• DE 100 62 932 A1 also describes a sun sensor.
• the electro-optical converter is attached below a scattering area for the incident sunlight, which is integrated in a cover.
• the scattering area and the electro-optical converter are arranged relative to one another in such a way that sunlight incident in a first angle of incidence of light is scattered through the scattering area before it strikes the converter.
• the sunlight is scattered in a predetermined angular range, while it is not scattered outside this range. Due to the scattering of the sunlight in the first angular range, a reduction in the sunlight incident on the transducer is achieved, as a result of which an excess signal in this angular range is to be avoided or reduced.
• the scattering area has an increased surface roughness compared to the remaining surface of the cover of the sensor. Presentation of the invention
• the object of the invention is to show a solar sensor which emits a signal which is proportional to the solar load even when the angle of incidence of the sunlight is flat.
• the invention is based on the idea of providing the inside of a cover cap or a radiation-permeable region covering the transducer of the sensor with microspheres which also scatter the light but at the same time have a much lower attenuation.
• the microspheres are preferably glued or melted into the top.
• Plastic or glass are conceivable as spherical material. What is important is transparency and an almost spherical shape.
• microspheres have a higher scattering effect because their shape has a large increase in steeper flanks compared to known microstructures. This causes stronger additional refractions, the additional refraction occurring when entering the ball.
• the microspheres themselves have low absorption or absorption behavior, so that a comparable signal can be generated with smaller receiver areas.
• the scatter is also homogeneous due to the continuous course of the curves.
• One advantage of this solution is that, despite the strong and intended scattering effect, a high light intensity is maintained.
• microspheres can be applied to the entire inside of the plastic cap of the sensor. Otherwise known sticking to the tool is avoided.
• FIGURE shows a cover cap for a solar sensor 1 shown in the most essential parts in a partial sectional view.
• the solar sensor 1 has a housing or a cap 2, which has a transducer 3 and further electrical components 4 located in the sensor 1 and a circuit board 5 for receiving and electrically contacting the components 3, 4 with other electrical components, not shown, within the Sensor 1 or other modules 10 located outside of sensor 1 are covered.
• the entire cap 2 provides a radiation-permeable region 2.2. A smaller area is also possible.
• the cap 2 is preferably made of a plastic or glass.
• the microspheres 6 have a similar or the same material and are transparent like the cap 2.
• the shape of the microspheres 6 should preferably be spherical or at least spherical.
• the microspheres can have a diameter e.g. have between 40 ⁇ m - 70 ⁇ m. Other sizes can be used just as effectively, but may cause problems in application or processing.
• the diameter range mentioned above is produced by sieving and can be obtained from various manufacturers. For example from Potters, SiLi or Siltrade.
• the converter 3 can be an electro-optical, an infrared or another known converter which delivers an electrical signal equivalent to the radiation.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Photometry And Measurement Of Optical Pulse Characteristics (AREA)
• Optical Elements Other Than Lenses (AREA)
• Details Of Audible-Bandwidth Transducers (AREA)
• Laminated Bodies (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=33441279

Family Applications (1)

Country Status (9)

Cited By (1)

Families Citing this family (2)

Citations (3)

Family Cites Families (7)

• 2003
  • 2003-05-22 DE DE10323709A patent/DE10323709A1/de not_active Withdrawn
• 2004
  • 2004-05-19 CN CNB2004800141216A patent/CN100388016C/zh not_active Expired - Fee Related
  • 2004-05-19 KR KR1020057022275A patent/KR101014896B1/ko active IP Right Grant
  • 2004-05-19 AT AT04739276T patent/ATE370432T1/de not_active IP Right Cessation
  • 2004-05-19 JP JP2006529886A patent/JP2007503588A/ja active Pending
  • 2004-05-19 MX MXPA05012367A patent/MXPA05012367A/es active IP Right Grant
  • 2004-05-19 WO PCT/EP2004/005448 patent/WO2004104649A1/de active IP Right Grant
  • 2004-05-19 ES ES04739276T patent/ES2291886T3/es not_active Expired - Lifetime
  • 2004-05-19 EP EP04739276A patent/EP1625429B1/de not_active Expired - Lifetime
  • 2004-05-19 DE DE502004004654T patent/DE502004004654D1/de not_active Expired - Lifetime

Patent Citations (3)

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